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Basic Balancing of Rotor Systems

Excerpt

Unbalance exists in all rotating machinery; when the vibration due to unbalance exceeds allowable limits, balancing is required.

Unbalance and Rotor Response
Vibration Transducers and Balancing
Balancing Methodology
Locating the Heavy Spot Using a Polar Plot
Using Polar Plots of Velocity and Acceleration Data
Selecting the Calibration Weight
Relating Balance Ring Location to Polar Plot Location
Single Plane Balancing With Calibration Weights
Weight Splitting
The Influence Vector
The Influence Vector and Dynamic Stiffness
Multiple Modes and Multiplane Balancing
Multiplane Balancing With Influence Vectors
How Balancing Can Go Wrong
Summary
References

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